12180225 has 36 divisors (see below), whose sum is σ = 21120176. Its totient is φ = 6193440.

The previous prime is 12180221. The next prime is 12180227. The reversal of 12180225 is 52208121.

It is a happy number.

12180225 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12180225 - 2² = 12180221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12180221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39522 + ... + 39828.

Almost surely, 2^12180225 is an apocalyptic number.

12180225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12180225 is a deficient number, since it is larger than the sum of its proper divisors (8939951).

12180225 is a wasteful number, since it uses less digits than its factorization.

12180225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 12180225 is about 3490.0179082635. The cubic root of 12180225 is about 230.0833031583.

Adding to 12180225 its reverse (52208121), we get a palindrome (64388346).

The spelling of 12180225 in words is "twelve million, one hundred eighty thousand, two hundred twenty-five".